Which activity involves using a luge in Queenstown?

The correct choice highlights that the primary activity associated with using a luge in Queenstown is sliding. The luge in this context refers to a wheeled, gravity-fueled ride that typically takes place on a specially designed track. Participants slide down the track, adjusting their speed and direction by steering. It offers an exhilarating experience as riders maneuver through banked corners and straightaways, enjoying the thrill of speed and the stunning views of the surrounding landscape.

While the concept of racing could come into play, especially if multiple participants are involved and competing for time or speed, the fundamental activity is sliding down the track in a luge. The other options, such as jumping and caving, do not align with the specific experience of riding a luge, which focuses on the sliding motion along the designated course.